[Task]: Static Theme preview with light-dark()

[ahmubashshir]

Description

This theme uses light-dark() to define color according to system colorscheme... but the theme preview is currently blank for this.

matcha-pueril-1.1.zip
matcha-sea-3.1.zip

Acceptance Criteria

• Themes using light-dark() are rendered properly.

┆Issue is synchronized with this Jira Task